Re: patched sms-cm acpi/ec.c to 2.6.11.5

[Pedro Venda <pjvenda-pQd4kjVL+REh2FBCd0jGRA@public.gmane.org>]

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hello francois,

François Valenduc wrote:
| I tried this patch and it doens't work very well. First, the kernel
| takes a very long time to boot. I have to wait more than 30 seconds to
| see the first kernel messages appear.

I've also experienced this initial delay, but mine didn't take AT ALL 30 seconds.
5 perhaps but not 30. I'm still trying to figure this out. with me it happens
immediately at kernel boot. no messages, just a black screen. after a while, the
kernel boots normally as if it just began booting.

| Second, it takes also a long time
| to load the ac and battery modules. It correctly detects the AC status
| and the presence of the battery. Nevertheless, I can never get the
| battery charge level (or maybe after a too long time and I didn't wait
| enough).

sorry, didn't happen here. this behaviour I could explain with a buggy patch.
you see, since the latest rich's patch didn't apply, I looked at it and implemented
the same changes on the current drivers/acpi/ec.c, so I could have ruined it.

basically I switched the lock struct member with a semaphore and replaced every
spinlock call by a corresponding semaphore call.

| Finally, it causes problem with USB support (or maybe only with
| the usblp module). Here below is an extract of dmesg showing the problem:

that's new. I'm just using an usb mouse on the laptop...

| So it seems there is still some work needed to get sbs-cm patch working
| correctly.

indeed. the problem is that I'm not experienced in kernel programming and
rich townsend is currently pursuing another path to support smart-batteries.

thanks for your bug reports. Not sure if I'll be able to help you though.

regards,
pedro venda.
- --

Pedro João Lopes Venda
email: pjvenda < at > arrakis.dhis.org
http://arrakis.dhis.org
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